Brennkraftmaschine mit variabler Ventilbetätigungseinrichtung für Einlassventile, mit elektrisch betätigten Stellventil vom Typ mit zwei Wegen und drei Stellungen

Details

Veröffentlichungs-Nr.

EP2832960

Aktenzeichen

EP13178883

Anmeldetag

1. August 2013

Veröffentlichung

16. September 2015

Erteilung

16. September 2015

Rechtsraum

EP

IPC

F01L9/02F01L13/00

Abstract

An internal-combustion engine is equipped with a system for variable actuation of the intake valves, comprising a single electrically actuated control valve (1; 100; 1') for each cylinder, which controls communication of the pressurized-fluid chamber (C) of the system with a discharge channel (23). The control valve (1; 100; 1') is a two-way valve, having at least three different operating positions, namely, a first operating position in which it is completely open, a second operating position in which it is only partially open, and a third operating position in which it is completely closed. Electronic control means are provided programmed for keeping the control valve (1; 100; 1') in its third, completely closed, position in operating stages in which the intake valve (7) must remain coupled to the respective cam and for bringing the control valve (1; 100; 1') from its third, completely closed, position to its second, partially open, position or to its first, completely open, position in operating stages in which the intake valve (7) must be uncoupled from the respective cam, selection between said first position and said second position of the control valve (1; 100; 1') being made as a function of one or more operating parameters of the engine.

Anmelder

Firma

C.R.F. Società Consortile per Azioni

Land

🇮🇹 Italien

Fachgebiete